Question: when does Pervez Musharraf start as Chairman Joint Chiefs of Staff Committee?
Paraphrase: Pervez Musharraf starts as Chairman of the Joint Chiefs of Staff Committee on?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q40495 p:P39 ?s . ?s ps:P39 wd:Q5068077 . ?s pq:P580 ?value}